Feed-bar for fountain-pens



(No Model.)

P FARWBLL FEED BARVFOR FOUNTAIN PENS.

Patented May 28,1895'.

4Z. .ma A4 /Wmssesz hinweg.

UNITED; STATES PATENT OFFICE.

PULASKI FARWELL, OF FREDERICK, ILLINOIS.

FEED-BAR FOR FouNTAlN-PENS.

SBECIFICATION forming part of Letters Patent No. 540,017, dated May 28,1895.

Application filed September 5, 1894.v Serial No. 522.197. (No model.)

To all whom, it may concern:

Be it known that I, PULASKI FARWELL, a citizen of the United States, anda resident of Frederick, in the county of Schuyler and State ofIllinois, have invented certain new and useful Improvements in Feed-Barsfor Fountain-Pens; and I do declare the following to be a full, clear,and exact description of the invention, such as will enable othersskilled in the art to which it appertains to make and use the same,reference being had to the accompanying drawings, and to letters ofreference marked thereon, which form a part of this specification.

Figure 1 of the drawings is a partial central longitudinal section of apen, showing invention applied. Fig. 2 is a cross-section of invention.Fig. 3 isa perspective view of same.

The object of this inventionis to provide a feed bar for fountain pensby means of Which a more even flow of ink is secured, which will notclog up, thereby enabling a poorer quality of ink to beused in the pen,and which can be readily cleaned.

With this object in view the invention consists in the novelconstruction and combina-l tion of parts, all as hereinafter described,andV pointed out in the appended claims.

`By reference to the accompanying drawings it will appear that theinvention more particularly consists in the provision of a feed bar,having a plug a, which ts the case or holder of the pen, and a reducedfeed extension b. Formed in one side of said bar is a' longitudinal openor surface duct, or channel, having a substantiallyT fiat bottom wall,and side walls which are parallel with each other for a portion of theirheight, but whose upper portions are beveled outwardly and upwardly, V

forming inclined .surfaces d, d, which in use are adjacent to the wallof the case or holder and to the pen, and form therewith lateral inkconduits, which are independent of the body of the duct`which serves asthe air duct only. The shape of the ductis uniform throughout itslength. I find in practice that the construction prevents clogging orstoppage of the ink, rendering the iiow more even and regu.- lar, andpermitting the use in the pen of an inferior quality of ink if necessaryor desired.

VThe construction also presents no places fpr y the catching andreception of sediment, and

the bar can be thoroughly cleaned by merely wiping with a piece of paperor cloth.

In the drawings Ihave shown the bevels d, as extending about to one halfthe depth of the channel or duct, such being the usual arrangement. I donot, however, limit myself to any precise point on the walls of the ductat which the bevels shall commence.

I am aware that it is common to provide a feed bar for fountain penswith ink conduits of various forms, and that in some of these bars thelateral Walls of the groove forming such conduits meet the pen at anacute angle; but these lateral walls have been continuous, that is tosay, there has been no line of positive separation between the ink and'air conducting portions of the conduit. The

present invention is distinguished therefrom in the fact that thebeveled surfaces d, d form ink conductingsurfaces which are independentof the body of the channel, which is found to produce a' much more evenand regular feed, as the air enters the ink chamber Without in any Wayobstructing the outward flow of the ink.

Having thus described my invention, what I claim as new, and desire tosecure by Letters Patent, is

1. As a new article of manufacture, the herein described improved feedbar for fountain pens, consisting of a plug portion a, and a reducedfeed extension b, said plug portion and extension having therein alongitudinal open or surface duct or channel, whose side walls areparallel for a portion of their height, but Whose upper portions arebeveled outwardly and upwardly, forming inclined surfaces, which whenthe bar is in use, constitute ink conducting surfaces, independent ofthe body of the channel, which serves as the air duct, substantially asspecified.

2. A feed bar for fountain pens,having a single open channel therein,said channel having lateral walls which are parallel for a portion oftheir height, but Whose upper portions are outwardly beveled to form inkconducting surfaces independent of the body of the channel,substantially as specified.

In testimony whereof I affix my. signature in presence of two witnesses.

PULASKI FARWELL.

Witnesses:

GEO. BRINGNORD, W. M. GRIMWOOD.

IOO

